Add transformer name to config for logging in factory transformer

pkg/transformers/factories/transformer.go

@@ -55,7 +55,7 @@ func (transformer Transformer) Execute() error {
 		return err
 	}
 
-	log.Printf("Fetching vat move event logs for %d headers \n", len(missingHeaders))
+	log.Printf("Fetching %v event logs for %d headers \n", transformer.Config.TransformerName, len(missingHeaders))
 	for _, header := range missingHeaders {
 		// Grab topics from config
 		var topics [][]common.Hash

pkg/transformers/shared/transformer.go

@@ -28,6 +28,7 @@ type Transformer interface {
 type TransformerInitializer func(db *postgres.DB, blockChain core.BlockChain) Transformer
 
 type TransformerConfig struct {
+	TransformerName     string
 	ContractAddresses   []string
 	ContractAbi         string
 	Topics              []string